Dear useRs,
version 2.2-2 of the "betareg" package has just been released on CRAN
http://CRAN.R-project.org/package=betareg
accompanied by an article in the Journal of Statistical Software
http://www.jstatsoft.org/v34/i02/
The package provides beta regression for data in the unit interval (0, 1)
such as rates and proportions. The manuscript replicates several practical
applications from econometrics and psychometrics.
Best wishes,
Z